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How to Restore Timber Sash Windows in Cambridge Many homes in Cambridge feature traditional sash window and the homeowners are proud of their appearance. However, sash windows can become stuck and difficult to open or close. This is often due to moisture, which can cause the timber to expand. Traditionally, box sash windows utilised chains or cotton cord and weights made of lead to operate. Modern sash windows have hidden springs to solve this issue. 1. Aesthetics Timber sash windows, in contrast to PVC-u windows that are made in imperial sizes that are modular, can be reconstructed to their original size. This allows for the restoration of timber sash windows to meet current energy requirements and conform to conservation regulations for areas. It also comes with windows that are superior to uPVC alternatives. Sliding windows with sash were initially only found in large buildings or public buildings, but this changed when production became less expensive and craftsmen could make larger frames with more glass. In the late 18th century windows made of sash were the predominant wooden design in most British homes. Sash windows were simple to operate and let light in rooms without the use of curtains. Early windows were plain glass, but in the 17th century, sash windows started to become more decorative, with coloured glazing bars and moulded mullions. They were expensive at the beginning but as glass production became cheaper and more efficient, they were commonplace in many homes of the period. In the 19th century, it became possible to create large, strong glasses that didn't require support bars. This allowed the frame's size to increase more, which in turn gave a better view from the window. This was a significant advancement. Another significant improvement was the introduction of the double-hung sliding windows at the end of the I920s and beginning of I930s. The double-hung sliding sash was a important improvement that was made at the end of the I920s and at the beginning of the I930s. Oak was used in older and more luxurious buildings. It is essential to keep the parting bead which separates the sashes. This will prevent draughts and rattles. It is also important that the idler and sash pulley wheels are kept in good working order as they aid in operating the window. 2. Energy efficiency As larger and clearer glass sheets became available, sash window began replacing hinged casements. They were glazed with plate glass placed within timber frames with rebates and secured with glazing sprigs, and then putty on both sides to ensure they were watertight. This kind of glazing gradually replaced leaded lights. The introduction of sashes created a need for a much greater variety of ironmongery, including the most basic fittings, brass pulleys, lead (and later cast iron) weights, sash stops shutter hinges and knobs as well as a range of fasteners to hold the sashes into place. They were often decorated with motifs, inscriptions and engravings that identified the maker. With regular maintenance, sash windows can be very energy efficient. But, if you don't maintain them, they can become draughty and let in cold air. Paint and putty may cause draughts too. This can be corrected using proprietary wood-to-timber repair products. The replacement window industry relies on the perception that traditional windows are rotten and beyond repair, but they can be easily maintained with just a little care. Repairs can be expensive and cause a lot of disruption in the home. Many homeowners decide to replace their windows using PVC-u from a huge “one-stop shop” installation company. They can replace all windows in a house in a single day, saving time and eliminating the need for multiple tradesmen to coordinate. They are also available with 'energy-saving' double-glazing to achieve more energy efficient ratings than are possible with traditional sash windows. However these double-glazed units are unable to duplicate the proportions and section of the sashes made of timber from the past. 3. Security It is possible to secure windows that are traditional without compromising their appearance. Many types of ironmongery are available including sash chains mortice bolts and locks for sash. They can be fitted in a way so that the window can still be opened to allow ventilation and cleaning. These are typically minimal in appearance, as they are designed to complement the sash window. They can be used in conjunction with traditional sash-window catches, which are required to be replaced with more robust models (such ones with double screws) or sprung levers to reduce the chance of them being hammered open. Sash-window frames are usually made from oak or slow-grown deal. If glazing bars have survived, they should be kept and, if feasible, the wood of the cill should be replaced with identical wood. Many PVC-u firms offer a one-stop shop installation service. They can take down and replace windows on a complete house in just one day, without involving any other tradespeople. 4. Ventilation When sash windows first introduced in the 17th century, they allowed a substantial amount of light to flood into the buildings. In the 18th century, they had been modified to allow more light could be let into rooms. Larger glazing panes were also produced. windows cambridge was a more streamlined appearance, and windows that had a higher degree of elegance than before. The introduction of sash windows also required the creation of a new line of ironmongery. Early pulleys were made out of wood. Later Victorian ones were made of brass or a combination of leaded and wood. There were also various types of knobs and shutter hinges. Ironmongery elements must be retained and cleaned down so that the quality of their design can be appreciated. To ensure they remain in good condition, wooden windows need to be maintained. Inattention to maintenance could lead to: Sashes that do not slide easily. holes in the frame allow water causing damage and decay. break down of the putty and allow water penetration, which can lead to decay in the frame and cill. In the I920s and the I930s steel casement windows increased in popularity due to their strength, slim and cheap and were in line with the trend for healthy living. Research has proven that softwood sash window are just as effective as PVC-u windows and can even be more attractive. The window replacement industry was able to convince homeowners that their old windows were decayed drafty, noisy and beyond repair. The truth is that a lot of older windows made of timber are in good condition and with minor repairs can easily be serviceable for many years to be. 5. Maintenance A traditional sash window requires regular maintenance and inspection. If you do not maintain your sash window, it can cause the sash cords breaking, and the glazing bars deteriorating excessively. It could also cause paint and putty deteriorate. The removal of sashes can also result in structural shifts within the frame, which causes the sash to be misaligned and in a position that it is not able to close properly. The sash could also get stuck in an open position, which allows water and draughts into the building. Moisture penetration is a frequent cause of damage to timber windows. This can be prevented with thorough painting, periodic repairs, and removing the source of dampness. Wet rot is recognisable by the wavy look of the paint, which can be stripped away to reveal rotting, soft timber. The rotten timber sections should be carefully removed and the affected part should be scarfed or glued together with replacements of the exact nature as the rest of the timber. This repair method increases the amount original fabric and is among the most minimally invasive methods of treating the rot that occurs between timber and timber. A wood condenser that is based on resin is a viable alternative to traditional sanding or staining. It is brushed onto the surface of the wood to protect it and strengthen it. It is especially beneficial for the treatment of pulley cords and sash which can help prevent breakage. It is crucial that any historic ironmongery like sash stays and latches are retained and restored instead of replaced. It can be difficult to replace these items without compromising their original design. It is also recommended that modern fittings made of aluminium like sashlifts and chainstays, be avoided as they could cause corrosion and deterioration of timber frames and sashes.